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Law obeyed by Pulse Oximeteris _______(a) Lambert-Bouguer law(b) Beer ‘s law(c) Beer-Lambert law(d) Lamber-Bouguer, Beer’s and Beer-Lambert LawThis question was addressed to me in semester exam.Query is from Electroencephalograph (EEG) topic in chapter Biomedical Recorders of Biomedical Instrumentation

Answer»

The correct ANSWER is (d) Lamber-Bouguer, Beer’s and Beer-Lambert LAW

Easy explanation: Light passing through the ear or finger will be absorbed by skin PIGMENTS, TISSUE, cartilage, bone, arterial blood, venous blood. The absorbances are additive and obey the Beer-Lambert law. Beer-Lambert is COMBINATION of Lambert-Bouguer and Beer’s Law.



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